middle cardiac vein

In it runs the posterior interventricular artery and middle cardiac vein.

It may drain to the coronary sinus, right atrium, middle cardiac vein, or be absent.

Vessels related to it are posterior interventricular branch of right coronary artery and middle cardiac vein.

These include the great cardiac vein, the middle cardiac vein, the small cardiac vein and the anterior cardiac veins.

The middle cardiac vein commences at the apex of the heart; ascends in the posterior longitudinal sulcus, and ends in the coronary sinus near its right extremity.